Often the seal on waterpumps leaks when a new or rebuild pump is
installed or if an engine has not run for a while and if water instead
of coolant is used.
Usually the leaking stops after a while when the seal and mating surface
have bedded in. If the leaking does not stop the seal is worn, the
rubber diaphragm has ripped or the mating face is pitted badly,
rebuilding or renewing the pump is at hand.
Kees Oudesluijs
NL
andy pole wrote:
> Guys
>
>
>
> I have only started my car a few times on axle stands, and have traced a water
> leak that is dripping from the bottom edge of the water pump and running down
> the edge of the engine. Its a few drops every hour, since I started it again
> yesterday.
>
>
>
> I was going to pull the pump and change the gasket, again using a sealant on
> both sides (will use blue hylomar instead of red hermatite this time, like I
> used too), checking if its the coming up the stud or from the mating faces.
>
>
>
> I have only got to fit the bonnet, grille and front bumper now, but would like
> to sort this problem first. Hopefully there may be enough clearance on
> removing the fan blades and the recored radiator to get the pump straight
> out.
>
>
>
> Reading the archives, it has been suggested that it could be the new pump and
> running it dry on a drill might make the seal bed in? Please note I'm in the
> UK (if suggesting a rebuild on a new pump). It was an SC Parts pump on offer
> which I propably purchased 3 years ago.
>
>
>
> any thoughts?
>
>
>
> thanks Andy
>
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